No, Molly Malone is an original work.
No doubt you’ll hear it in The Quiet Man.
Yes!!! That’s it. Thank you. I’ve been hearing it all my life without knowing what the hell it was. 
“Molly Malone”'s alternative names include “In Dublin’s Fair City” and “Cockles and Mussels”.
Don’t forget to ask me to play my Irish folk music for you in 3 weeks. If you want to watch me squirm. :eek:
You played it for me before I think, hammered dulcimer?
Hammered and Irish usually go together.
Mountain dulcimer, good memory.
Tabhair Dom Do Lamh is also spelled incorrectly on the inlay Bmalion IIRC. 
Mmmm … Keira Knightley … drool
Old McTavish is dead and his brother don’t know it
His brother is dead and McTavish don’t know it
Both of them dead in the very same bed
But neither one knows that the other is dead
(I’ve always been fond of “The Black Velvet Band” myself)